central bank digital currency

A central bank digital currency, or CBDC, is a digital form of a country's official money, issued and backed directly by its central bank. Unlike the money in your bank account, which is a claim on a commercial bank, a CBDC is a direct liability of the central bank itself, the same status as physical banknotes and coins. It is, in essence, cash reimagined as a digital token for the internet age.

A CBDC sits apart from both ordinary bank deposits and from cryptocurrencies like Bitcoin. Its value is not market-driven; one digital dollar is always worth one ordinary dollar, because the state stands behind it. And while some designs borrow technical ideas from blockchains, most CBDCs are not decentralized at all: the central bank remains firmly in control of issuance and the rules, which is the opposite of the trustless, permissionless ethos of public cryptocurrencies. The technology is a tool here, not a philosophy.

Think of it as official cash that lives on your phone instead of in your wallet, spendable instantly and digitally while still being state-issued legal tender. Proponents see CBDCs as a way to modernize payments, reach people without bank accounts, and settle transactions faster and more cheaply. Because the design choices, especially around how much transaction privacy individuals retain, carry significant social weight, CBDCs are an area of active experimentation by central banks worldwide.